Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b57cfc4eddd60c…

MALICIOUS

PDF

42.5 KB Created: 2020-11-04 02:03:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 4d4e1f908bf644cb97dbe5d8d2239a48 SHA-1: d147006b3854002d6c8f13c686dc589a77bfb1c6 SHA-256: 72b57cfc4eddd60c2e2ac7b510de1705fd44379ec72900db24625178c5996f82
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/wb?keyword=safe%20app%20download%20sites In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382770/normal_5fa1d975ebe65.pdfIn PDF document text
    • https://xazebuwojij.weebly.com/uploads/1/3/4/4/134467588/7584677.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8608d2d-e183-416b-8d68-d43c85949e6f/plantillas_caligrafia_para_imprimir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81b198ff-0e0b-4a22-92cf-45a68daf0dbb/midip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e127991-b16d-422d-b595-57c3e8a9ac03/5894628869.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/tartarin_de_tarascon_en_franais.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/the_ghost_of_john_kids_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03d73e7d-875b-459d-a230-b6d32f8a3a73/vodumuzugozofepexizer.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/riesgo_cardiovascular_preoperatorio.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/39618019163.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f186da58-06d0-42a2-8625-beec10b7e0b5/88658443315.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6652 5132 bytes
SHA-256: 87b736712d9ad600f427792e2736b838c1d9b5841e6514f096385780cb0cb4ee
font_01_sfnt_off000077f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F4 11036 bytes
SHA-256: 0d07c6a3dee8e946b6f6660499c20725ded72c325f5477d468d1650276003fb9

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